How to remove this object from a Swift array? [duplicate]

Question

What would be an appropriate command for removing formattedCoordinate from the array? I know a removeObject exists for Objective-C, but how about Swift?

var markersArray: Array<CLLocationCoordinate2D> = []

func mapView(_ mapView: GMSMapView, didTap marker: GMSMarker){
    let lat: CLLocationDegrees = marker.position.latitude
    let lng: CLLocationDegrees = marker.position.longitude
    var formattedCoordinate = CLLocationCoordinate2D(latitude: lat,longitude: lng)
    //markersArray.remove(formattedCoordinate) need to fix this
    self.clean()
    //    return 0; not sure if we need this here
}

func mapView(_ mapView: GMSMapView, didBeginDragging marker: GMSMarker){
    let lat: CLLocationDegrees = marker.position.latitude
    let lng: CLLocationDegrees = marker.position.longitude
    var formattedCoordinate = CLLocationCoordinate2D(latitude: lat,longitude: lng)
    // markersArray.remove(formattedCoordinate) need to fix this
}

Stick an at: in front of formattedCoordinate in your line with remove — Tad Donaghe
– Tad Donaghe, Commented Apr 2, 2017 at 20:02
See the swift language guide section on collections: developer.apple.com/library/content/documentation/Swift/… — Tad Donaghe
– Tad Donaghe, Commented Apr 2, 2017 at 20:02
With the dupe target in mind, the only remaining problem is that CLLocationCoordinate2D doesn't (for whatever reason) conform to Equatable – doing so is fairly trivial, see for example stackoverflow.com/a/27364437/2976878 — Hamish
– Hamish, Commented Apr 2, 2017 at 20:14
But the user might click on marker that was drawn previously, so it's not always the last member of the array that needs to be removed. — konyv12
– konyv12, Commented Apr 2, 2017 at 20:22

JuicyFruit · Accepted Answer · 2017-04-02 20:08:18Z

1

I would suggest

self.markersArray = self.markersArray.filter({ !(($0.latitude == formattedCoordinate.latitude) && ($0.longitude == formattedCoordinate.longitude)) })

edited Apr 2, 2017 at 20:08

answered Apr 2, 2017 at 20:02

JuicyFruit

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4 Comments

JuicyFruit Over a year ago

yeah, my bad, fixed it, sry.

konyv12 Over a year ago

I have a multi-dimensional array. Will this work for that?

JuicyFruit Over a year ago

@konyv12 haven't tried, but since filter gets a closure, theoretically it should, if you adapt this code to works not with CLLocationCoordinate2D but [Class]

konyv12 Over a year ago

what do you mean exactly by [Class]?

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